LDPE

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. It was the first grade of polyethylene, produced in 1933 by Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. Its manufacture employs the same method today. The EPA estimates 5.7% of LDPE (recycling number 4) is recycled. Despite competition from more modern polymers, LDPE continues to be an important plastic grade. In 2009 the worldwide LDPE market reached a volume of US$22.2 billion (15.9 billion).

Place of Origin: China

Types: Low-density  Polyethylene Resin,Linear low density polyethylene-LLDPE,

Packing: Bulk,container,pallet,carton

Use :used to provide agricultural films, bags, shopping bags, food shrinkage film, heavy

packaging, cosmetic packaging, high transparent shrinkage and other kinds of products

hand packing ,film packing Healthcare Applications, Medical Film.

Specification of  LDPE

PROPERTY

UNIT

SPECIFICATION

Melt Flow Index

(190°C/2.16kg)

g/10min

≤0.3

 

 

Density

g/cm3

0.922

tensile strength

Mpa

≥31

Elongation at break

%

≥450

Brittle temperature at low

temperature

°C

≤-50

ESCR ,FO

H

≥48

Oxidation induction

 period at 200°C

Min

≥30

Content of Carbon black

%

2.60±0.25

Carbon Black dispersion

--

≥6

Absorption coefficient

--

≥400

Ceka softening point

°C

--

Dielectric strength

Mv/m

25

Volume resistivity

Ω.m

≥1*1014

Dielectric Constant

--

≤2.80

 

Specification of LLDPE:

PROPERTY

UNIT

SPECIFICATION

Melt Flow Index

g/10min

≤1.0

Density

g/cm3

≤0.945

Tensile strength

Mpa

≥14.0

Elongation at break

%

≥600

Brittle temperature at low temperature

°C

≤-76

ESCR ,FO

H

≥500

Carbon Black dispersion

--

--

Tensile strength after thermal aging

Mpa

≥13

Elongation after thermal aging

%

≥500

Dielectric strength

Mv/m

≥25

Volume resistivity

Ω.m

≥1*1014

change rate of tensile strength after

weather aging environment of

%

±25

change rate of elongation after weather aging environment of

%

±25

change rate of tensile strength after

weather aging environment of

%

±15

change rate of elongation after

weather aging environment of

%

±15

 

 

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